I think listing OTP/EPROM as a feature of the LP87524B-Q1 is misleading. It seems there is no way to program it, even once!
I understand it is programmed once at the factory, but I can't find any way to program it on my board. If the user can't program it, you should label it ROM.
I designed the part in to my board assuming (incorrectly) I could program it. Now I am stuck. The default values for Boost2 and Boost3 are too high and will damage components. My plan was to power the board with the regulators disabled and program the OTP from external I2C as part of the first time board bring up. It's a little inconvenient, but the other features of the LP87524B-Q1 made it worth the hassle. Powering up disabled and programming over external I2C works fine, but I can't do that in the application. There is nothing to power then on-board I2C until Boost0 is active.
It wasn't till I was testing the new boards today that I realized there are no instructions in the data-sheet for programming the OTP. My fault for not doing better research, but I could sure use some help if there are any other options. I am even considering Zeners on Boost2 and 3 to protect my components and trip over current shutdown on those rails to give me a chance to re-program them after power up.
Any other ideas?
